From: Steve Sistare <steven.sistare@oracle.com>
To: qemu-devel@nongnu.org
Cc: "Daniel P. Berrange" <berrange@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Jason Zeng" <jason.zeng@linux.intel.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Juan Quintela" <quintela@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Eric Blake" <eblake@redhat.com>,
"Markus Armbruster" <armbru@redhat.com>,
"Alex Williamson" <alex.williamson@redhat.com>,
"Steve Sistare" <steven.sistare@oracle.com>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: [PATCH V5 21/25] chardev: cpr for simple devices
Date: Wed, 7 Jul 2021 10:20:30 -0700 [thread overview]
Message-ID: <1625678434-240960-22-git-send-email-steven.sistare@oracle.com> (raw)
In-Reply-To: <1625678434-240960-1-git-send-email-steven.sistare@oracle.com>
Set QEMU_CHAR_FEATURE_CPR for devices that trivially support cpr.
char-stdio is slightly less trivial. Allow the gdb server by
closing it on exec.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
chardev/char-mux.c | 1 +
chardev/char-null.c | 1 +
chardev/char-serial.c | 1 +
chardev/char-stdio.c | 8 ++++++++
gdbstub.c | 1 +
include/chardev/char.h | 1 +
migration/cpr.c | 1 +
7 files changed, 14 insertions(+)
diff --git a/chardev/char-mux.c b/chardev/char-mux.c
index 5baf419..bf7bad9 100644
--- a/chardev/char-mux.c
+++ b/chardev/char-mux.c
@@ -336,6 +336,7 @@ static void qemu_chr_open_mux(Chardev *chr,
*/
*be_opened = muxes_opened;
qemu_chr_fe_init(&d->chr, drv, errp);
+ qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR);
}
static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
diff --git a/chardev/char-null.c b/chardev/char-null.c
index 1c6a290..02acaff 100644
--- a/chardev/char-null.c
+++ b/chardev/char-null.c
@@ -32,6 +32,7 @@ static void null_chr_open(Chardev *chr,
Error **errp)
{
*be_opened = false;
+ qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR);
}
static void char_null_class_init(ObjectClass *oc, void *data)
diff --git a/chardev/char-serial.c b/chardev/char-serial.c
index 7c3d84a..b585085 100644
--- a/chardev/char-serial.c
+++ b/chardev/char-serial.c
@@ -274,6 +274,7 @@ static void qmp_chardev_open_serial(Chardev *chr,
qemu_set_nonblock(fd);
tty_serial_init(fd, 115200, 'N', 8, 1);
+ qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR);
qemu_chr_open_fd(chr, fd, fd);
}
#endif /* __linux__ || __sun__ */
diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c
index 403da30..9410c16 100644
--- a/chardev/char-stdio.c
+++ b/chardev/char-stdio.c
@@ -114,9 +114,17 @@ static void qemu_chr_open_stdio(Chardev *chr,
stdio_allow_signal = !opts->has_signal || opts->signal;
qemu_chr_set_echo_stdio(chr, false);
+ qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR);
}
#endif
+void qemu_term_exit(void)
+{
+#ifndef _WIN32
+ term_exit();
+#endif
+}
+
static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
Error **errp)
{
diff --git a/gdbstub.c b/gdbstub.c
index 52bde5b..b014b52 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -3534,6 +3534,7 @@ int gdbserver_start(const char *device)
mon_chr = gdbserver_state.mon_chr;
reset_gdbserver_state();
}
+ mon_chr->close_on_cpr = true;
create_processes(&gdbserver_state);
diff --git a/include/chardev/char.h b/include/chardev/char.h
index e488ad1..96e5570 100644
--- a/include/chardev/char.h
+++ b/include/chardev/char.h
@@ -295,5 +295,6 @@ void resume_mux_open(void);
void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp);
bool qemu_chr_cpr_capable(Error **errp);
+void qemu_term_exit(void);
#endif
diff --git a/migration/cpr.c b/migration/cpr.c
index feff97f..4600d8c 100644
--- a/migration/cpr.c
+++ b/migration/cpr.c
@@ -146,6 +146,7 @@ void cprexec(strList *args, Error **errp)
}
walkenv(FD_PREFIX, preserve_fd, 0);
vhost_dev_reset_all();
+ qemu_term_exit();
qemu_system_exec_request(args);
}
--
1.8.3.1
next prev parent reply other threads:[~2021-07-07 17:36 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 17:20 [PATCH V5 00/25] Live Update Steve Sistare
2021-07-07 17:20 ` [PATCH V5 01/25] qemu_ram_volatile Steve Sistare
2021-07-08 12:01 ` Marc-André Lureau
2021-07-12 17:06 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 02/25] cpr: reboot mode Steve Sistare
2021-07-08 12:25 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-08-04 15:48 ` Eric Blake
2021-07-07 17:20 ` [PATCH V5 03/25] cpr: QMP interfaces for reboot Steve Sistare
2021-07-08 13:27 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-08-04 15:48 ` Eric Blake
2021-08-04 20:27 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 04/25] cpr: HMP " Steve Sistare
2021-07-28 4:55 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 05/25] as_flat_walk Steve Sistare
2021-07-08 13:49 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 06/25] oslib: qemu_clr_cloexec Steve Sistare
2021-07-08 13:58 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 07/25] machine: memfd-alloc option Steve Sistare
2021-07-08 14:20 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-12 17:45 ` Marc-André Lureau
2021-07-07 17:20 ` [PATCH V5 08/25] vl: add helper to request re-exec Steve Sistare
2021-07-08 14:31 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 09/25] string to strList Steve Sistare
2021-07-08 14:37 ` Marc-André Lureau
2021-07-07 17:20 ` [PATCH V5 10/25] util: env var helpers Steve Sistare
2021-07-08 15:10 ` Marc-André Lureau
2021-07-12 19:19 ` Steven Sistare
2021-07-12 19:36 ` Marc-André Lureau
2021-07-13 16:15 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 11/25] cpr: restart mode Steve Sistare
2021-07-08 15:43 ` Marc-André Lureau
2021-07-08 15:54 ` Marc-André Lureau
2021-07-12 19:19 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 12/25] cpr: QMP interfaces for restart Steve Sistare
2021-07-08 15:49 ` Marc-André Lureau
2021-07-12 19:19 ` Steven Sistare
2021-08-04 16:00 ` Eric Blake
2021-08-04 20:22 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 13/25] cpr: HMP " Steve Sistare
2021-07-28 4:56 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 14/25] pci: export functions for cpr Steve Sistare
2021-07-07 17:20 ` [PATCH V5 15/25] vfio-pci: refactor " Steve Sistare
2021-07-07 17:20 ` [PATCH V5 16/25] vfio-pci: cpr part 1 Steve Sistare
2021-07-16 17:45 ` Alex Williamson
2021-07-19 17:43 ` Steven Sistare
2021-07-28 4:56 ` Zheng Chuan
2021-07-30 12:50 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 17/25] vfio-pci: cpr part 2 Steve Sistare
2021-07-16 20:51 ` Alex Williamson
2021-07-19 17:44 ` Steven Sistare
2021-07-19 18:10 ` Alex Williamson
2021-07-19 18:38 ` Steven Sistare
2021-07-28 4:56 ` Zheng Chuan
2021-07-30 12:52 ` Steven Sistare
2021-07-31 6:07 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 18/25] vhost: reset vhost devices upon cprsave Steve Sistare
2021-07-07 17:20 ` [PATCH V5 19/25] hostmem-memfd: cpr support Steve Sistare
2021-07-07 17:20 ` [PATCH V5 20/25] chardev: cpr framework Steve Sistare
2021-07-08 16:03 ` Marc-André Lureau
2021-07-12 19:20 ` Steven Sistare
2021-07-12 19:49 ` Marc-André Lureau
2021-07-13 14:34 ` Steven Sistare
2021-07-07 17:20 ` Steve Sistare [this message]
2021-07-07 17:20 ` [PATCH V5 22/25] chardev: cpr for pty Steve Sistare
2021-07-07 17:20 ` [PATCH V5 23/25] chardev: cpr for sockets Steve Sistare
2021-07-29 4:04 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 24/25] cpr: only-cpr-capable option Steve Sistare
2021-07-07 17:20 ` [PATCH V5 25/25] simplify savevm Steve Sistare
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